Minnesota Department of Transportation

511 Travel Info

Bridges and Structures

Design, construction and maintenance resources

Do It Right! Lessons from the field not to be repeated


  • Some Contractors come up with
    innovative techniques.
  • Here they are, slip-forming a barrier
    rail with a field stone finish.
  • Protect barrier reinforcement and surface of deck where barrier will be installed from
    being sprayed with AMS cure.
  • Slip‐formed barriers need a 7-day wet cure: 7 days with the wet side of the burline in contact with the concrete.
  • Dry burline hanging off the barrier is unacceptable—